Don't even think about asking for advice on how to make this repair. Boeing and all other aircraft OEMs specify how to repair their parts. They specify everything including, in some cases, the brand of spray gun which must be used to make the repair. If you do it differently, you will never work for your customer again, and if something bad happens to that plane, even if it was not related to your repair, you can be sure that you will be talking to some government officials. If you are lucky, only your business will be shut down.

dear Len and Djewell, thanks for your advises, I am not so interesting to do this job , since too many regulation, just for my reference and knowledge how to do, better doing the others industries such as : Power, Pulp and Paper, Oil and Gas, etc, Yes I have advised to their for refer to Boeing Manual Book, but even their engineering division was not so clearly understand...